Seamless Pipe

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Seamless Steel Pipe, Seamless Pipe

Carbon Steel, Stainless Steel Welded or Seamless Pipe. Stainless steel pipe is the most commonly used standard pipe today. These pipes are part of tubular goods that are made to differing standards and specifications. The nominal pipe size is the one that pipes are sold in . It can be any size from 1/8" up to 72". Welded pipe and seamless pipes are the most popular types of pipe. Both can be made in stainless steel or carbon steel. Welded pipes are also known as ERW (Electric Resistance Welded). A53 is the most common specification for welded carbon-steel pipe. Seamless pipes are made using a process that does not require welding. A106B is the most common specification for seamless carbon-steel pipe. Stainless Steel pipes can be made to spec A312. Stainless steel pipes are also available in seamless and welded versions. The most common stainless steel material are 316 and 304. How is Pipe Measured? Pipe is usually identified by the "Nominal Pipe Size" or "NPS", with the wall thickness being defined by "Schedule". NPS is a dimensionless designationator. It is an indicator of size, but not its actual size . This can be confusing for people who are new to the piping industry. NPS 1/8 to NPS 12 have an outside diameter defined by ansi sizes. A schedule 40 pipe dimension is approximately equal to the ID for 12 NPS. Pipe sizes 14 and higher are easier to understand as a 14 NPS pipe dimension is equal to 14" outside diameter. Pipe Size Chart. ASMEB 36.10 provides more information about pipe sizes. Different types of pipe have different industry standards for size. A standard pipe with a 4.5 inch diameter will be called 4" NPS. However, a line pipe or OCTG will refer to it as 4.5". Different terms are used to describe wall thickness. Standard pipe is designated by wall thickness using the pipe schedule. Line pipe is usually referred to by its wall thickness, whereas OCTG refers to the weight per foot. Weigh of Pipe. The pipe's weight is either in kilograms per meter or pounds per foot. The ansi pipe size chart shows the weight of the pipe. It is not the actual weight. Actual weight will depend on pipe size tolerances.
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